fix: unhandledpromiserejection in electron tests (#3146)

When this method is async (without any actual async work) the
'should fail to publish if does not receive private key' test
experiences an UnhandledPromiseRejection in electron, though the
test still passes.

Author: achingbrain

packages/ipfs/src/core/ipns/publisher.js

@@ -32,7 +32,7 @@ class IpnsPublisher {
   }
 
   // Accepts a keypair, as well as a value (ipfsPath), and publishes it out to the routing system
-  async publish (privKey, value) { // eslint-disable-line require-await
+  publish (privKey, value) {
     return this.publishWithEOL(privKey, value, defaultRecordLifetime)
   }